Students are to create a Quizlet word list and print the "glossary", stapling it in their notebook. This is a large assignment and should be completed over time. These terms come from the Delta Science program on electrical connections. Mr. Woodmansee will distribute the words and definitions for you to create your Quizlet list.

There are two editions, one given by Woonsocket with a copyright of 2000/2002The other was issued from some of the nearby towns with a copyright of 2007

questions: 1. What is induction of electric current? 2. Compare and contrast a motor and a generators. 3. How is alternating current different from direct current? 4. Describe the different ways of spinning turbines to generate electricity? 5. What is the difference between a renewable and a nonrenewable energy source? Give an example of each.

Observation & AnalysisSkip Lines

What is the direction of the current through the coil in Step 2?

What direction did the pointer move in Step 2?

What can you conclude about the direction of the current in the circuit adn the direction of the pointer of the galvanometer/

What happens to the pointer of the galvanometer when the switch is opened? Why?

A Control Circut

Key Terms: Potentiometer, Rheostat, Variable Resistor

Construct a circuit diagram of this circuit in your notebook (step 2)

Observations & AnalysisSkip Lines

What is happening to the current through the bulb if the bulb is dimming?

What happened to the brightness of the bulb when Wire A was moved to the right of Pin 1 on the Nichrome wire?

How does the length of the part of the Nichrome wire in the circuit change as Wire A is slid away from Pin 1?

How does the resistance in the circuit change as Wire A is slid away from Pin 1?

What happens to the current in the circuit as the wire slid away from Pin 1?

What happens to the brightness of the bulb as the wire is slid to the right?

Summary Notes

Comparing Currents

Observation & AnalysisSkip Lines

Is Circuit A series or a parallel circuit?

How did the brightness of each bulb compare in Circuit A?

How does the construction of Circuit B differ from that of Circuit A?

How did the brightness of the bulbs in Circuit B compare with the brightness of the bulb in Circuit A?

How do you think the currents in Circuits A and B compared? Why?

How do Circuits C and D differ from Circuits A and B?

Compare the brightness of the bulbs in Circuits C and A?

Compare the brightness of the bulbs in Circuits D and B.

Do you think the galvanometers had much effect on the brightness?

How did the brightness of the bulbs in Circuits C and D compare to each other?

How do the galvanometer readings compare in Circuits C and D?

Using this information, what can you conclude about the readings of the galvanometer and the amount of current?

Conservation of Current

Observation & AnalysisSkip Lines

How did the addition of the second light bulb to the circuit affect the deflection of the galvanometer pointer?

What did the smaller deflection indicate about the current in this circuit, compared with the current in the circuit with the single bulb?

How does Circuit 1 differ from Circuits A and B?

How is Circuit 1 classified?

How did the readings of the galvanometer compare at the two locations in Circuit 1?

From these observations, how did the currents compare at the two locations?

What type of circuit is Circuit C?

How did the brightness of the Bulbs 1 and 2 compare?

How did the brightness compare with the brightness of the bulb in Circuit 1?

From your observations of the brightness of the bulbs, what can you say about the current through each of the bulbs in Circuit C and through the bulb in Circuit 1?

How did the current through Bulbs 1 and 2 compare

How did the current between the switch and the battery compare with the currents through the bulbs?

Resistance

Key Terms: Resistance

Table 1 QuestionsSkip Lines

How did the addition of the 50-cm (about 20 in.) length of Nichrome wire affect the galvanometer reading?

How did the addition of the 100 cm (about 40 in.) length of wire affect the galvanometer reading?

What can you conclude about the effect of the two different lengths of Nichrome wire on the current?

Which length of wire do you think had the greater resistance?

Observations & AnalysisSkip Lines

How did the Nichrome wire affect the candle?

From this observation, what form of energy do you think was produced by the Nichrome wire?

Why is the light bulb called an energy converter?

Is the Nichrome wire in this circuit an energy converter? Explain.

Batteries in Parallel

Observations & AnalysisSkip Lines

How did the galvanometer readings of the current through the resistor change when either switch was closed?

From these observations, was the current through the resistors the same each time both of the two switches was closed?

How did the current through the resistor change when both switches were closed?

How did the galvanometer readings in each branch compare when both switches were closed?

How did either of these two galvanometer readings compare with the galvanometer readings of the current through the resistor?

Because the current in each branch is half that through the bulb, how much electric energy is each battery supplying to the bulb?

acts as a clearing house for charitable donations which are paid directly to educator for a variety of purposes. Your donated funds are used directly for use in the classroom and/or for other educational purposes.&nbsp